emscripten/tests/fetch/idb_store.cpp at incoming · JavaScriptIOT/emscripten · GitHub

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#include <string.h>

#include <stdio.h>

#include <math.h>

#include <assert.h>

#include <stdlib.h>

#include <time.h>

#include <emscripten/fetch.h>

#define TEST_SIZE 512000

int main()

{

// 1. Populate an IndexedDB file entry with custom data bytes in memory.

emscripten_fetch_attr_t attr;

emscripten_fetch_attr_init(&attr);

strcpy(attr.requestMethod, "EM_IDB_STORE");

attr.attributes = EMSCRIPTEN_FETCH_REPLACE | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_PERSIST_FILE;

uint8_t *data = (uint8_t*)malloc(TEST_SIZE);

srand(time(NULL));

for(int i = 0; i < TEST_SIZE; ++i)

data[i] = (uint8_t)rand() | 0x40;

attr.requestData = (char *)data;

attr.requestDataSize = TEST_SIZE;

emscripten_fetch_t *fetch = emscripten_fetch(&attr, "myfile.dat");

assert(fetch->status == 200 && "Initial IndexedDB store of myfile.dat should have succeeded");

emscripten_fetch_close(fetch);

// 2. Make sure it is there.

emscripten_fetch_attr_init(&attr);

strcpy(attr.requestMethod, "GET");

attr.attributes = EMSCRIPTEN_FETCH_NO_DOWNLOAD | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY;

fetch = emscripten_fetch(&attr, "myfile.dat");

assert(fetch->status == 200 && "emscripten_fetch from IndexedDB should have found the file");

assert(fetch->numBytes == TEST_SIZE);

assert(fetch->totalBytes == TEST_SIZE);

assert(fetch->data != 0);

assert(fetch->data != (char *)data); // We should really have obtained a new copy of the memory.

assert(!memcmp((char *)data, fetch->data, TEST_SIZE));

emscripten_fetch_close(fetch);

// 3. Delete the file from IndexedDB by invoking an Emscripten-specific request "EM_IDB_DELETE".

emscripten_fetch_attr_init(&attr);

strcpy(attr.requestMethod, "EM_IDB_DELETE");

attr.attributes = EMSCRIPTEN_FETCH_SYNCHRONOUS;

fetch = emscripten_fetch(&attr, "myfile.dat");

assert(fetch->status == 200 && "Deleting the file from IndexedDB should have succeeded");

assert(fetch->numBytes == 0);

assert(fetch->data == 0);

emscripten_fetch_close(fetch);

// 4. Now try to get the file again from IndexedDB, and ensure it is no longer available.

emscripten_fetch_attr_init(&attr);

strcpy(attr.requestMethod, "GET");

attr.attributes = EMSCRIPTEN_FETCH_NO_DOWNLOAD | EMSCRIPTEN_FETCH_SYNCHRONOUS | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY;

fetch = emscripten_fetch(&attr, "myfile.dat");

assert(fetch->status == 404 && "Attempting to GET the file from IndexedDB again should have failed after the file has been deleted");

assert(fetch->numBytes == 0);

assert(fetch->data == 0);

emscripten_fetch_close(fetch);

printf("Test succeeded!\n");

#ifdef REPORT_RESULT

REPORT_RESULT(0);

#endif

}

emscripten/tests/fetch/idb_store.cpp at incoming · JavaScriptIOT/emscripten · GitHub

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